Kohler K-T14421-4-SN Installation guide

Installation Guide

Single-Control Bath and Shower Trim

K-14418, K-T14420, K-T14421,

K-T14422, K-T14423, K-14425,

K-14426, K-14427

M product numbers are for Mexico (i.e. K-12345M)

Los números de productos seguidos de

M corresponden a México (Ej.

K-12345M)

Français, page “Français-1”

Español, página “Español-1”

1031692-2-D

IMPORTANT INSTRUCTIONS

READ AND SAVE FOR THE

CONSUMER

WARNING: Risk of scalding or other severe injury.

•

Before completing installation, the installer must set the

maximum water temperature setting of this valve to minimize the

risks associated with scalding hazards according to ASTM F 444.

•

Do not install a shut-off device on either outlet of this valve. The

installation of any such device may create a cross-ﬂow condition

at the valve and affect the water temperature.

•

Factors that change the temperature of the water supplied to the

valve, such as seasonal water temperature changes, and water

heater replacement or servicing, will change the maximum water

temperature supplied by the valve and may create a scalding

hazard.

•

The pressure-balanced valve will not compensate for changes in

the water supply temperature; adjust the maximum water

temperature setting of this pressure-balanced valve when such

changes occur.

•

Pressure-balanced valves may not provide protection against

scalding if there is a failure of other temperature-limiting devices

elsewhere in the plumbing system.

The installer is responsible for installing the valve and adjusting the

maximum water temperature of this valve according to instructions.

This valve meets or exceeds ANSI A112.18.1 and ASSE 1016.

If you do not understand any of the installation or temperature

adjustment instructions in this document, in the United States please

contact our Customer Service Department at 1-800-4-KOHLER.

Outside the U.S., please contact your distributor.

IMPORTANT NOTICE TO INSTALLERS! Please ﬁll in the blanks in

the information box in the Homeowners Guide and on the valve label.

Retain the Homeowners Guide for future reference.

1031692-2-D 2 Kohler Co.

Thank You For Choosing Kohler Company

We appreciate your commitment to Kohler quality. Please take a few

minutes to review this manual before you start installation. If you

encounter any installation or performance problems, please don’t

hesitate to contact us. Our phone numbers and website are listed on

the back cover. Thanks again for choosing Kohler Company.

Tools and Materials

Before You Begin

CAUTION: Risk of product damage to the K-306-KS valve

assembly. When using this valve in a ﬁberglass or acrylic

installation, use the Thin Wall Installation Kit (88526).

Observe all local plumbing and building codes.

The ﬁnished wall or bath/shower unit must be installed prior to

installing this trim.

Before installing the trim, determine if the maximum water

temperature is acceptable to the user. If temperature adjustment is

needed, refer to the ″Optional Temperature Limiting Adjustment″

section of this guide.

The valve shuts off by water pressure. Do not force the handle in

any direction. To turn the valve off, gently turn it to the ″OFF″

position.

Shut off the main water supply.

Kohler Co. reserves the right to make revisions in the design of

products without notice, as speciﬁed in the Price Book.

Plumbers

Putty

Strap

Wrench

Thread

Sealant

Kohler Co. 3 1031692-2-D

1. Install the Spout

Remove the temporary nipple.

Apply thread sealant and install a 1/2″ nipple so it extends

1-1/4″ (3.2 cm) beyond the ﬁnished wall.

Apply thread sealant to the nipple and thread the spout onto the

nipple.

Carefully tighten with a clean strap wrench.

1/2" Nipple

1-1/4"

(3.2 cm)

1031692-2-D 4 Kohler Co.

2. Install the Showerhead

CAUTION: Risk of product damage. To avoid clogging the

showerhead spray outlets, use thread sealant tape on the

shower arm threads. Do not use thread sealant compound

(pipe dope).

Remove the temporary nipple from the shower elbow.

Apply thread sealant to the shower elbow, then install a 1/2″

NPT pipe nipple to the shower elbow. The nipple must extend

1-1/4″ (3.2 cm) beyond the ﬁnished wall.

Turn the main water supply on.

Run hot and cold water through the shower arm to ﬂush out dirt

and debris.

IMPORTANT! If a gasket is NOT installed on the escutcheon of

the shower arm: Apply a bead of plumbers putty or other sealant to

the back of the shower arm. Refer to the putty or sealant

manufacturer’s instructions for proper application. This will ensure a

watertight seal.

Apply thread sealant tape to the pipe nipple and thread the

shower arm onto the pipe nipple.

Carefully tighten the shower arm to the pipe nipple with a clean

strap wrench.

Remove all excess putty around the escutcheon.

1-1/4"

(3.2 cm)

1/2"

Nipple

Kohler Co. 5 1031692-2-D

3. Optional Temperature Limiting Adjustment

CAUTION: Risk of personal injury. The water temperature

should never be set above 120°F (49°C).

Turn the valve clockwise to the full open position and let the hot

water run for several minutes. Position a thermometer in the

water stream and check the temperature.

For minor water temperature changes, adjust the setscrew, and

recheck the water temperature.

For major water temperature changes, remove the O-ring and

collar from the valve stem. Slowly rotate the valve stem until the

desired maximum water temperature is reached.

Reinstall the collar on the valve stem with the setscrew against

the side of the tab.

Reinstall the O-ring, rotate the valve stem counterclockwise to

shut the water off.

Recheck the water temperature.

Complete the information on the valve label (if supplied).

O-Ring

Setscrew

Tab

Collar

Setscrew

Valve

Label

Standard

Valve

High Flow

Valve

Stem

1031692-2-D 6 Kohler Co.

4. Diverter Assembly

Remove and discard the plaster guard and/or dome, if installed.

Position the actuator over the diverter stem. Tighten the setscrew.

Slide the guide over the actuator and thread it onto the diverter

stem.

Guide

Setscrew

Actuator

Diverter Assembly

Valve

Stem

Diverter

Stem

Discard plaster

guard with dome.

Kohler Co. 7 1031692-2-D

5. Install the Faceplate and Handle

CAUTION: Risk of product damage to the K-306-KS valve

assembly. When using this valve in a ﬁberglass or acrylic

installation, use the Thin Wall Installation Kit (88526).

For installation over a tiled wall, apply a bead of silicone sealant

around the back edges of the faceplate.

Break off the tab at the lower right on the backing plate. Fit the

backing plate over the valve so the large hole is on the bottom

and secure with two screws. Do not overtighten.

Rotate the valve stem fully counterclockwise.

Position the faceplate over the backing plate and thread the collar

into the backing plate. Do not cross thread.

Insert the sleeve into the notches of the collar and hand tighten. If

the collar does not thread into the backing plate, thread the

backing plate screws 1/2 turn back.

Insert the stem extension through the sleeve and collar with the

ﬂat sections of the stem extension facing up.

Attach the stem extension to the valve stem with the ﬂat head

screw.

Insert the handle screw through the handle stem.

Place the handle over the handle stem.

Securely tighten the handle screw to the handle.

Attach the handle stem with the attached handle to the stem

extension.

Screws

Setscrew

Handles

Handle Stem

Notch

Sleeve

Stem

Stem Extension

Tab

Handle Screw

Faceplate

Collar

Valve Stem

Flat Head

Screw

Backing

Plate

1031692-2-D 8 Kohler Co.

Install the Faceplate and Handle (cont.)

Secure the handle stem to the stem extension with the setscrew.

Check the handle alignment. The handle lever should point

straight down.

To adjust the handle position, remove the handle and reposition

the stem. Reinstall the handle and check the alignment. Repeat

until the proper alignment is achieved.

For further adjustment, remove the handle screw and rotate the

handle in the stem extension. Reinstall the handle screw.

6. Complete the Installation

Turn the valve fully counterclockwise to the off position.

Remove the aerator assembly from the spout by turning it

counterclockwise.

Turn on the main water supply.

Turn the valve to the center and run water for approximately one

minute to ﬂush the system.

Check all connections for leaks.

Reinstall the aerator.

Kohler Co. 9 1031692-2-D

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